Narwal Flow 2
Narwal’s flagship for hard-floor homes that want the best self-cleaning track mop and a low profile. Carpet-heavy homes get more from the cheaper Freo 20.
Amazon $1,299.99$1,299.99
The Narwal Flow 2 is the better robot vacuum overall, rated 3.9 to 3.4. The Narwal Flow 2 leads on cleaning.
Prices were last checked November 11, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Roborock Saros Z70
#102 in Self-cleaning dockFull review
For early adopters who want a robot that tidies small clutter; buyers who just want clean floors get more for less elsewhere.
Amazon $1,299.99$1,299.99
Which should you buy?
- Choose the Narwal Flow 2 for cleaning (measured 84% of sand from carpet, 88% of pet hair, no hair tangled vs measured 67% of sand from carpet, 83% of pet hair, some hair tangled (0.5)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every self-cleaning dock robot vacuum; a clear win is highlighted. How we rank explains each one.
| Factor weight | Narwal Flow 2 | Roborock Saros Z70 |
|---|---|---|
| Overall rating | 3.9/5 | 3.4/5 |
| Cleaning 30% | 68 measured 84% of sand from carpet, 88% of pet hair, no hair tangled | 20 measured 67% of sand from carpet, 83% of pet hair, some hair tangled (0.5) |
| Value 25% | 20 $1,300 | 20 $1,300 |
| Dock 20% | 100 Self-empties the bin, washes the mop, hot-water mop wash, hot-air mop drying, doses detergent, optional water hookup | 100 Self-empties the bin, washes the mop, hot-water mop wash, hot-air mop drying, doses detergent, optional water hookup |
| Navigation 15% | 100 LiDAR + camera | 100 LiDAR + camera |
| Mopping 10% | 92 Roller, lifts 12 mm, extends to edges | 86 Dual spinning pads, leaves its mop at the dock for carpet, extends to edges |
Independent tests
Narwal Flow 2
| Tested by | Carpet deep clean | Pet hair | Hair tangle (0 = none) | Area per charge | Conditions |
|---|---|---|---|---|---|
| Vacuum Wars | 84% | 88% | 0 | 2,321 sq ft | Embedded sand in medium-pile carpet; flattened 2.5 in pet hair on carpet, two runs; 7 in hair tangle on hard floor (0 = none wrapped). |
Roborock Saros Z70
| Tested by | Carpet deep clean | Pet hair | Hair tangle (0 = none) | Area per charge | Conditions |
|---|---|---|---|---|---|
| Vacuum Wars | 67% | 83% | 0.5 | 1,204 sq ft | Embedded sand in medium-pile carpet; flattened 2.5 in pet hair on carpet, two runs; 7 in hair tangle on hard floor (0 = none wrapped). |
Specifications
| Narwal Flow 2 | Roborock Saros Z70 | |
|---|---|---|
| Vacuum | ||
| Claimed suction | 31,000 Pa | 22,000 Pa |
| Main brush | Anti-tangle roller brush | FreeFlow brush |
| Dustbin | - | 180 mL |
| Extending side brush | - | Yes |
| Mopping | ||
| Mop | Roller, lifts 12 mm, extends to edges | Dual spinning pads, leaves its mop at the dock for carpet, extends to edges |
| Mop lift | 12 mm | 15 mm |
| Leaves mop at dock | No | Yes |
| Extending mop | Yes | Yes |
| Water tank | 130 mL | 69 mL |
| Dock | ||
| Dock | Washes mop + empties | Washes mop + empties |
| Self-empties | Yes | Yes |
| Dust bag | 2.5 L | - |
| Washes mop | Yes | Yes |
| Hot-water wash | Yes | Yes |
| Hot-air drying | Yes | Yes |
| Detergent dosing | Yes | Yes |
| Water hookup option | Yes | Yes |
| Navigation & app | ||
| Navigation | LiDAR + camera | LiDAR + camera |
| Obstacle avoidance | Dual RGB cameras with an AI chip and vision language model; structured-light edge sensors | 3D sensing, VertiBeam and dual cameras; the OmniGrip arm can move light items such as socks out of the way |
| Climbs thresholds | 30 mm | 40 mm |
| Matter | - | Yes |
| Voice assistants | Alexa, Google Assistant, Siri, Hey Nawa (built in) | Alexa, Google Assistant |
| Build | ||
| Height | 3.7 in (95 mm) | 3.1 in (79.8 mm) |
| Retracting LiDAR | No | No |
| Battery | 6,500 mAh | 6,400 mAh |
| Run time | - | Up to 3 h |
| Weight | 11 lb (5 kg) | - |
| Warranty | 1 year | 1 year |
| Released | 2026-04 | 2025-05 |